It is possible that the motheboard has gone bad. The power brick could also have developed a short in the cable. I would first see if you could use a different porwe cable and try that. If that doesn't work, then i would suggest changing the motherboard if possible.
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please use the following small secret. Disconnect the power adapter from the laptop. 2) Dissasembly the batteries from the laptop. 3) press the power button in ON with the adapter+battery disconnected from the computer. and maintain press the power button by EXACTLY 60 seconds.This liberate the ESD. 4) Try again. God bless you
I'm confused too... it sounds like the power adapter is not (electrically) connecting to the laptop or the adapter is not delivering proper voltage/amps to the laptop.
You shoud 1. make sure that the AC plug is properly in the AC socket, 2. that the AC cord is (mechanically) connected to the adapter, and 3. that the adapter is (mechanically) connected to the laptop.
I cannot tell you how many laptops I have seen where the (internal) power connector breaks as a result of (typically) mis-handling, dropping, etc. Try (gently) wiggling the adapter connector and look for the LED changing colors.
You could also test the voltage output of the adapter with a standard Volt meter...
1. Take the battery out of the laptop & try to turn on the laptop using power adapter only. If the computer turns on, then the battery is defective & needs to be replaced. 2. Make sure the power adapter is not defective. Test the output voltage of the power adapter using a voltmeter. Compare the voltmeter reading to the nominal value written on the adapter or the laptop. 3. Make sure the DC jack is not loose or broken. A loose DC jack will need to be re-soldered. A broken one will need to be replaced. 4. If you have another processor which is compatible with your laptop's model, try swapping processors & test to see if the laptop will work. 5. The power button could be bad. 6. The motherboard could be defective & needs to be replaced.
It sounds like you have a bad AC adapter . When you plug it in to the outlet in the wall and into your computer , do you see a charge indicator light on the computer? I'm asking you this because even with a bad battery your computer should operate without any problems with the AC adapter plugged in.
I have heard about this problem with a number of Dell laptops, including the Inspiron models. The problem is that the connector for the power port may have been loosened after many years of use. This may require service from Dell on the motherboard.